Improvement in gbaih-soeeen



Nq. 61,567 PATENTED AUG. 25, 1868 J. H. H, WISBEEART. "GRAIN SGRBBN.

x www MYI-mms.. v www @eine mes @sont @frire Leiler Patent No. 81,567, dated August 25, 1868.'

IMPROVEMENT IN GRAI-SUREEN.

eine Scintille oefenen in in time gisten! @nient :mi mailling im ni tige time.

T0 ALL WHOM IT MY UONCERN:

Bo it known that I, J. Il. H. Wrsnnnhn'r, of Shan'neetown, in the county of Gallatin, and Stato of Illinois, Ylieve inventcrla new and improved Grain-Screen; und I do Vhereby declare that tbcfollowing -is afuli, clear,

lund exact description of the construction and operation of' the same, reference being had to the annexed dran'- ings, forming a. part of this specification, and in which- Figure l is a longitudinal vertical section.

Figure 2 is a erosssection through the line :e x, fig.

Figure 3 is a cross-section ofthe screen.

Figure 4 is a detached top view of the end, b, of the screen.

The object oi' this invention is to furnish o ehoop'and simple apparatus, whereby grain may be thoroughly cleaned and separated from dirt, sticks, cheat, dwarfed kernels, 82e., in an expeditious and-convenient manner.

In the drawing,'A represents the frame ofthe machine; D is the rotary screen; C is chopper from which the frame is fed; D` is a screw-conveyor, by which the grain is carried from the hopper to the screen; E is the grnimdischarge spout, emlF is the 'discharge-spout for the cheat, dirt, 35e., the whole instrument being sup` ported `on crossed legs II H, and operated by n. crunk, G, attached to the 'end ofthe shaft D .oi' the conveyor D.

A. coarse wire sieve, I, is placed across the lower ond'of the hopper,- folr the purpose of separating the larger impurities, sticks, 5cc., from the groin before it is fed to the screen, und also of' regulating the feed of the grain to the screen. l

An inclined table, J, which may be f'ormedofthe bottom of the machine, is arranged under the scrcen,to receive and conduct; to tire spout F the impurities that may fallfroin the'sereen as the groin is passing thro-ugh it.

The screen itself is made in the form of a frustum of a cone or tapering polyhcdron, the large end, 6, beingattnched to and supported by the shaft D. The small end, o', revolves around the end of` the conveyorbox, and is secured to the shaft D by menus of braces c, said shaft hevingzjits bearing in the farther end ofthe conveyor-box, as shown clearly in iig. 1;

' Sluts e Ve e connect the ends 6 I1, and over them a wire sieve, s, is fastened. The' shaft D is arrangedin al horizontal position, anni as it revolves, the grain, f'od into the sereenfthrough the projecting convcyer-box, worlrs gradually downward towards the large end of the screen, spreading out over the expanded surface, es it moves, in such a manner as to bring the whole mess oi' thegrnin thoroughly in vcontactA with the surface of the sieve, und enable ull the foreign substances to c scapc.

The groin arriving at thsn'ooden plato or disk posses through opcningsz'p', around itsperimeter under the wire ganso. These openings nre arranged ohliquely across the edgeof the disk, so tbatthey exert n positive force, us the shaft revolves, to throw the groin forward o ut uf the screen.

The blocks r i', that separate the openings, project from the disk into the body of the chamber within the screen, es seen at m m m, in suoli4 a manner that when the screen is in motion,Y and the grain is wox-kinga1ong towards the end,ii ,y they-intercept the grain and force it'lhrough the openings. Falling from the openings, the groin escapes through tho'-gpout E. V 4

The serew-eonvcyer D is simply an extension of the'shaft D', Working in the elongated hex n, and provided with screw-threads, as seen in 4g. 1.

The inclination of tho-scrcW-threads must be in the same direction -as the inclination of the openings 'or passages e' i, in order that when the" c rank G is 'turned inthe proper direction, it may both feed. the impure grain into the screen at the and, b unddeliver the puro grain-from the screen at the ond, b.

The 'screen B wrksinside of'thcframe A, tholatter being so covered as to conceal the body of" the screen, except at an opening in the'.top of the'mnchino', which is provided, in' 'order thatthe operator may inspect'. its parking.:

It will be observed thattho-wooden slats s# o-perform unimportant function in the purifying of the grainv man 2 Extending the whole length `oi the screen, inside of its wire covering, they answer the purpose of beatersJ the groin falling from one to thcother of' themns the screen revolves, and the dirt, die., being thus thoroughly separated from it.

They, also, spreading from each other, serve as o ouvoyers to carry the grain along towards tho large ond 0f the screen.

' The sieve e may very in lineness from one end to the other, if desired, so as to separate the diiferent species of' impurities et different peints.

The machine has been very thoroughly tested, end found to work in every respect in theimost satisfactory manner.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The arrangement of the sieve I, with the hopper C, conveyor D, and screen B, substantially es described. 2. The arrangement of the hopper C, sieve I, screw-conveyer D, screen B, inclino J, and epouts E and F, substantially as described.

To the above specification of my improvement Ihave signed my hand,v this 24th doy of February, 1868.`

J. H. H. WISEHEART.

Witnesses:

H. Bsneen, B. M. Fm'vn. 

